Fig. 6
From: Adaptiveness of RGB-image derived algorithms in the measurement of fractional vegetation coverage
The relative error of the fractional vegetation coverage of different algorithms measured under the solar forenoon scenario. Fun01 is based on the combination of \(R/G\), \(B/G\) and \(2G-R-B\). Fun02 is the decision tree algorithm based on the RGB color. Fun03 uses the excess green and red indices to recognize the plants in the image. Fun04 used the excess green index and the Otsu algorithm to identify the plants in the image